Piss(es) you off in gaming

[~KAGE-008]

What obstacles, traps or gameplay mechanics make you piss off in gaming?

 

[Kaunisto]

Long missions where first half an hour is routine that you could do with one hand and then comes the real hard battle in which you win or (more likely) die in 2 minutes.

 

[~KAGE-008]

Autoscrolling levels in some games.

 

[Aura]

People on an MMO who que in for a fight, it pops, and they go AFK! And usually it is a tank or healer so you can't really progress without them.